docs: minor changes
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@ -861,7 +861,7 @@ CREATE [OR REPLACE] FUNCTION function_name AS library_path OUTPUTTYPE output_typ
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创建聚合函数的 SQL 语法如下。
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```sql
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CREATE [OR REPLACE] AGGREGATE FUNCTION function_name library_path OUTPUTTYPE output_type BUFSIZE 其中,buffer_size LANGUAGE 'Python';
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CREATE [OR REPLACE] AGGREGATE FUNCTION function_name library_path OUTPUTTYPE output_type BUFSIZE buffer_size LANGUAGE 'Python';
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```
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其中,buffer_size 表示中间计算结果的缓冲区大小,单位是字节。其他参数的含义与标量函数相同。
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